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The twelfth and final season of the American television sitcom The Big Bang Theory premiered on CBS on September 24, 2018.[1][2] The series returned to its regular Thursday time slot on September 27, 2018. The series concluded on May 16, 2019.

The Big Bang Theory (season 12)
The Big Bang Theory Season 12.jpg
Digital cover art
Starring
Country of originUnited States
No. of episodes24
Release
Original networkCBS
Original releaseSeptember 24, 2018 (2018-09-24) –
May 16, 2019 (2019-05-16)
Season chronology
← Previous
Season 11
List of The Big Bang Theory episodes

Contents

ProductionEdit

In March 2017, CBS renewed the series for two additional seasons, bringing its total to twelve, and running through the 2018–19 television season.[3] On August 22, 2018, CBS and Warner Bros. Television officially announced that the twelfth season would be the series' last. This stemmed from Jim Parsons' decision to leave the series at the end of season twelve if the show were to have been renewed for a thirteenth season.[1][4][5] The series concluded with an hour-long finale consisting of two back-to-back episodes on May 16, 2019.[6][7] A retrospective, hosted by Johnny Galecki and Kaley Cuoco, aired at 9:30 P.M. ET/PT, the night of the finale, following the season two finale of Young Sheldon.[8]

CastEdit

Main castEdit

Recurring castEdit

Guest castEdit

EpisodesEdit

No.
overall
No. in
season
TitleDirected byWritten byOriginal air dateProd.
code
US viewers
(millions)
2561"The Conjugal Configuration"Mark CendrowskiStory by : Chuck Lorre & Eric Kaplan & Tara Hernandez
Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe
September 24, 2018 (2018-09-24)T12.1600112.92[9]

Sheldon and Amy go on their honeymoon to New York City, starting with Legoland New York. Sheldon's insistence on scheduling their marital relations stresses Amy. He says he only does it to remind himself to be intimate with her. They compromise by letting him make a schedule without sharing it with her. Leonard and Penny discover Mr. Larry Fowler (Teller) in Sheldon and Amy's apartment hiding from his wife (Kathy Bates). Leonard notices parallels in his own marriage, which offends Penny. Leonard apologizes, and Penny convinces Mrs. Fowler to give her husband a break. When Mrs. Fowler wants to hang out with her regularly, Penny scares Larry out of the building. Raj instigates a Twitter feud with Neil deGrasse Tyson but is scared off when confronted over the phone. Neil then calls Bill Nye to scare him, too.


Title reference: Sheldon attempting to schedule his and Amy's conjugal relations.
2572"The Wedding Gift Wormhole"Mark CendrowskiStory by : Steve Holland & Steven Molaro & Maria Ferrari
Teleplay by : Dave Goetsch & Eric Kaplan & Andy Gordon
September 27, 2018 (2018-09-27)T12.1600212.04[10]

While opening their wedding gifts, Sheldon and Amy cannot figure out the purpose of the glass shard Leonard and Penny gave them. They decide it must be a clue to a scavenger hunt to the real gift. They eventually end up in the coffee shop where they first met and find a locket in the lost and found that they think must be the real gift. The glass shard was actually a crystal chakra wand that Raj gave as a gift to Howard and Bernadette, who then re-gifted it to Leonard and Penny, who finally passed it on as a joke. Leonard and Penny find it less funny when they are given a coded thank-you note they have to use to unlock their WiFi. After making out with his employee Denise at Sheldon and Amy's wedding reception, Stuart finally asks Denise out on a date; while preparing for the date, he has a spray-tan accident, but she just finds it funny and still goes out with him. Raj is depressed everyone else has a relationship and asks his father to arrange a marriage.


Title reference: Sheldon and Amy's journey to figure out the meaning of the wedding gift.
2583"The Procreation Calculation"Mark CendrowskiStory by : Chuck Lorre & Tara Hernandez & Adam Faberman
Teleplay by : Steve Holland & Maria Ferrari & Anthony Del Broccolo
October 4, 2018 (2018-10-04)T12.1600312.29[11]

Raj meets with the woman his father set up for him, Anu. Her commanding personality and practical approach to marriage startle Raj but he agrees to go ahead with it. Howard criticizes him but apologizes; he just never expected Raj to give up on romance. Raj admits this to Anu so she proposes to him, and he says yes. Raj also sends out a relationship questionnaire to Leonard and Penny, which soon reveals that Penny does not think she ever wants kids, upsetting Leonard, who would like to have kids someday, and their friends selfishly badger them on the issue. After telling her father Wyatt who is also upset, Leonard tells Penny that he'll be okay with it, as he never thought he'd have her in his life. To get his mind off of it, Penny rents Leonard a Batmobile to drive in and have fun with for the day. Meanwhile, Stuart starts bringing home Denise at night, which is very uncomfortable for Howard and Bernadette. When they also try to have time to themselves, they wake up their kids.


Title reference: Leonard and Penny trying to decide if they want to have children.
2594"The Tam Turbulence"Mark CendrowskiStory by : Steve Holland & Steven Molaro & Maria Ferrari
Teleplay by : Dave Goetsch & Eric Kaplan & Jeremy Howe
October 11, 2018 (2018-10-11)T12.1600412.94[12]

Sheldon's childhood friend from Texas, Tam, is visiting the university with his son. Sheldon does not want to see him and the others wonder why Sheldon has never mentioned Tam. Tam is unaware Sheldon is angry with him, thinking they just naturally drifted apart. Sheldon's brother George does not know the reason either. Sheldon eventually reveals Tam promised he would move to California with Sheldon, but then got a girlfriend and stayed with her, leaving Sheldon feeling abandoned. Tam and Sheldon make up and Sheldon has Leonard take Tam to the airport. Meanwhile, Penny and Bernadette want to get to know Anu, impressed by her connections in the hotel industry. They tell her embarrassing things about Raj and wonder if they can go out with her again after Raj confronts them.


Title reference: The anxiety caused by Tam's reappearance in Sheldon's life after 20 years of separation.
2605"The Planetarium Collision"Mark CendrowskiStory by : Eric Kaplan & Andy Gordon & Alex Ayers
Teleplay by : Steve Holland & Maria Ferrari & Tara Hernandez
October 18, 2018 (2018-10-18)T12.1600512.22[13]

Sheldon is annoyed that Amy does not have time to work on the super-asymmetry project with him so he talks President Siebert into getting her removed from her own project at the university. Amy is angry at both of them as she wants to still have her own identity outside the marriage. When confronted by Amy, Siebert apologizes to her but states that it will be difficult for the university to give her her project back. After talking with Arthur Jeffries in a dream, Sheldon apologizes to Amy and both of them talk about their fears in their marriage. Meanwhile, Raj does not want to have Howard join him in his show at the planetarium, thinking he'd just use his astronaut status to make it about himself. Raj eventually lets him join in and Raj and Howard spend the whole time complimenting each other, surprising Bernadette, Leonard and Penny.


Title reference: Howard colliding with Raj's job at the planetarium.
2616"The Imitation Perturbation"Mark CendrowskiStory by : Steve Holland & Maria Ferrari & Tara Hernandez
Teleplay by : Eric Kaplan & Jeremy Howe & Adam Faberman
October 25, 2018 (2018-10-25)T12.1600612.99[14]

Howard dresses as Sheldon for Halloween at work, hurting Sheldon's feelings. When Howard does not apologize, Amy and Sheldon dress as Bernadette and Howard at Penny and Leonard's party, angering Bernadette. Sheldon and Bernadette later bond over their painful childhood memories. Leonard is upset that Penny does not seem to remember that their first kiss was on Halloween. Penny later admits she does remember, but does not like to think of their first kiss as an unromantic drunken hookup. She likes to imagine their first kiss was one they shared on Leonard's birthday, which pleases him.


Title reference: Howard dressing as Sheldon for Halloween, and in response, Sheldon and Amy dressed up as Howard and Bernadette.
2627"The Grant Allocation Derivation"Mark CendrowskiStory by : Eric Kaplan & Anthony Del Broccolo & Alex Yonks
Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari
November 1, 2018 (2018-11-01)T12.1600712.64[15]

President Siebert charges Leonard with distributing some extra university funds in the form of a grant. Everyone begins sucking up to Leonard. Penny is impressed by Leonard's decisiveness but unimpressed when he cannot decide between Raj, Kripke and Dr. Lee (Maribeth Monroe), an ornithologist who works with crows. Leonard, realizing that people will be angry with him no matter who he gives the funds to, eventually awards the money to himself; many crows swarm his car afterwards. Meanwhile, a stressed out Bernadette starts hiding in Halley's playhouse after work so she can have time to herself. She is eventually joined by Penny and Amy. Howard reveals to Raj that he actually knows that Bernadette has been hiding out, but is keeping quiet about it so she can have her privacy and so he can use it to his advantage.


Title reference: Leonard choosing a grant recipient.
2638"The Consummation Deviation"Mark CendrowskiStory by : Chuck Lorre & Steve Holland & Maria Ferrari
Teleplay by : Eric Kaplan & Andy Gordon & Adam Faberman
November 8, 2018 (2018-11-08)T12.1600812.85[16]

Anu wants to have sex with Raj, but he gets so nervous in the leadup, that his selective mutism returns. Confessing to her, she is very understanding, revealing an unusual secret of her own. The next morning, he is able to have sex with her in the shower. Sheldon attempts to bond with his father-in-law, but Larry is more impressed with Howard's magic tricks, causing a jealous Sheldon to spend time with Mrs. Fowler. They bond after finding out Amy has been using Sheldon as an excuse to avoid her mother, though he does gently advise her to forgive her daughter like he would his wife. A remorseful Amy invites the Fowlers over for thanksgiving, where Sheldon and Mrs. Fowler continue to bond over Larry's ineptitude with magic.


Title reference: Raj unable to sleep with Anu.
2649"The Citation Negation"Kristy CecilStory by : Eric Kaplan & Tara Hernandez & Jeremy Howe
Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari
November 15, 2018 (2018-11-15)T12.1600912.56[17]

Sheldon and Amy recruit Leonard to research and write citations for their paper on super asymmetry. While working in the campus library, Leonard and Raj discover a Russian paper that asserts that super asymmetry has no merit. Reluctantly, Leonard shares the news with Sheldon and Amy, who fall into a depressive state and do not leave their apartment. Meanwhile, Bernadette asks Denise to teach her how to play Fortnite: Battle Royale so that she can beat Howard. Despite losing to Howard in a rematch after all of her training, Bernadette revels in beating a disinterested Penny.


Title reference: The Russian paper that disproves Sheldon and Amy's theory.

Note: The vanity card at the end of the episode paid tribute to the late Stan Lee, who died on November 12, 2018.
26510"The VCR Illumination"Mark CendrowskiStory by : Steve Holland & Steven Molaro & Bill Prady
Teleplay by : Maria Ferrari & Andy Gordon & Jeremy Howe
December 6, 2018 (2018-12-06)T12.1601012.52[18]

Sheldon is still despondent over the disproving of his and Amy's theory on asymmetry. Leonard brings out a VHS tape of a pep talk that Sheldon recorded as a boy, but it turns out that his father had recorded a long-ago football game over it. Sheldon, however, is buoyed by a halftime pep talk his father gave the team, realizing he and his father had more in common than he previously thought. This causes Amy to view asymmetry and symmetry in another manner and they decide their theory may not be dead after all. Bernadette finds an old tape of Howard preparing to audition for The Magic Castle. She insists he fulfill his dream and audition with her as a coach, drawing on her beauty pageant experience. Howard eventually decides to audition his own way, and promptly botches his chances by accidentally destroying a judge's Rolex.


Title reference: Old VHS tapes surfacing from Sheldon's and Howard's past.
26611"The Paintball Scattering"Mark CendrowskiStory by : Maria Ferrari & Tara Hernandez & Adam Faberman
Teleplay by : Steve Holland & Eric Kaplan & Anthony Del Broccolo
January 3, 2019 (2019-01-03)T12.1601112.80[19]

Sheldon and Amy's paper is a huge success, but Sheldon is upset when he is not allowed to do interviews, while Amy gets all the attention. Denise asks Stuart to move in with her but he panics and flees. Raj sets up a doorbell camera app for Anu but sees her greet her ex-boyfriend. At a paintball match, all the feuding couples argue, with Raj saying he cannot trust Anu since he does not even know her, throwing the wedding into question. Stuart makes up with Denise by giving her a key to the Wolowitz house. Sheldon tries to do one interview with Amy but leaves when he is asked about the Russian scientists who had earlier disproved their theory.


Title reference: The paintball match between everyone, which exposes the problems between the couples.
26712"The Propagation Proposition"Mark CendrowskiStory by : Chuck Lorre & Steve Holland & Jeremy Howe
Teleplay by : Maria Ferrari & Dave Goetsch & Eric Kaplan
January 10, 2019 (2019-01-10)T12.1601213.53[20]

Penny runs into her ex-boyfriend Zack, who has gotten rich from selling his company and married a similarly dim-witted woman named Marissa. Meeting with Leonard and Penny, they say Zack is infertile and ask to pay Leonard as a sperm donor so they can have a baby. Leonard is flattered, but Penny finds it creepy. Leonard says that since Penny decided she did not want to have children, he should be allowed to help another couple with this issue. Sheldon advises him to think about the emotional toll this could have on him. Leonard says he will not do it if Penny objects; Penny says she will support whatever decision Leonard makes. Meanwhile, Raj tries to get Anu back but she points out he just wanted to be married like his friends. Raj points out that Anu is similarly looking for a quick marriage. He admits to Anu that he really likes her and they decide to start their relationship as just dating.


Title reference: Zack and Marissa asking Leonard to father their child.
26813"The Confirmation Polarization"Mark CendrowskiStory by : Eric Kaplan & Andy Gordon & Anthony Del Broccolo
Teleplay by : Steve Holland & Maria Ferrari & Tara Hernandez
January 17, 2019 (2019-01-17)T12.1601313.32[21]

Two physicists from Chicago, Dr. Campbell and Dr. Pemberton, accidentally prove Sheldon and Amy's super-asymmetry theory. This puts them on track for a Nobel Prize, but Leonard points out they tend to go to the experimental scientists who prove a concept instead of theorists like Sheldon who come up with it. Meeting with them, they tell Sheldon they are willing to share the Prize but only three names can be on the submission, and they want to cut Amy out. Amy does not want to prevent Sheldon's lifelong dream, but he goes to President Seibert who agrees to fight for Amy on their behalf. Meanwhile, Bernadette's drug has been approved and she wants to promote Penny to lead the marketing team. Penny resists, knowing Bernadette's attitude at work and doubting her own inexperience to take the responsibility, but Bernadette uses reverse-psychology to get Penny to take the job. Penny mirrors Bernadette's commanding style to get the other employees in line, impressing Bernadette.


Title reference: Sheldon and Amy's reaction to their theory being proven but then their reaction to Amy possibly being cut out.
26914"The Meteorite Manifestation"Mark CendrowskiStory by : Chuck Lorre & Steve Holland & Maria Ferrari
Teleplay by : Eric Kaplan & Tara Hernandez & Jeremy Howe
January 31, 2019 (2019-01-31)T12.1601413.66[22]

Howard and Bernadette's new neighbor Andy begins using floodlights mounted on his balcony that encroaches on their rear deck and hot tub. Investigating whether the lights comply with city code, they enlist Sheldon to help them with the paperwork, but Sheldon finds out Howard and Bernadette's own deck is also not code-compliant. He considers turning them in, but ultimately chooses friendship over the rules. He does report Andy though for violating property lines, allowing Howard and Bernadette to enjoy their deck again. Meanwhile, Bert wants to cut into a meteorite with Raj's help, rejecting Leonard's idea to use his laser to do so. Leonard dreams that he opens the meteorite with his laser, becomes possessed by an alien intelligence and eats Bert, Raj and Penny. He later apologizes to Raj and Bert, admitting he was jealous. The possibility of the meteorite unleashing a plague scares Stuart and Denise, who use it as foreplay for procreation, Stuart closing the store on Sheldon when he tries to browse.


Title reference: Leonard's jealousy and nightmares of opening the meteorite and eating his friends.
27015"The Donation Oscillation"Mark CendrowskiStory by : Bill Prady & Jeremy Howe & Adam Faberman
Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari
February 7, 2019 (2019-02-07)T12.1601513.97[23]

Leonard tells Zack and Marissa he will father their child, but Penny tries to seduce him despite knowing he has to be abstinent for a few days. Her visiting father, Wyatt, points out her actions suggest she is more conflicted over having kids than she lets on, which she admits. Wyatt says he will support her no matter what. Meanwhile, Sheldon and Amy warn that he will not be allowed to raise a child that is not his. Leonard decides not to go through with it; he tells Zack to have Sheldon be the donor, but Amy forbids it. Meanwhile, Howard turns Raj's cancelled bachelor party into a couples' trip into a zero-gravity aircraft, though he's convinced that Bernadette would hate it. Bernadette tries to get out of it so Howard sits out, forcing Bernadette to go through with it just to prove him wrong, though she does not enjoy it.


Title reference: Leonard decides to donate his sperm but then chooses not to do it.
27116"The D&D Vortex"Mark CendrowskiStory by : Steve Holland & Maria Ferrari & Anthony Del Broccolo
Teleplay by : Eric Kaplan & Andy Gordon & Tara Hernandez
February 21, 2019 (2019-02-21)T12.1601613.48[24]

Wil Wheaton brings William Shatner on his Professor Proton show to meet Sheldon, who gets so excited that he vomits on Shatner. Going to Wil to apologize, he finds Wil hosts a Dungeons & Dragons group with his celebrity friends including Shatner. Finding out Stuart is in the group and never told them, the guys make Stuart panic and quit. Wil secretly invites Leonard who discovers that the group also includes Shatner, Kevin Smith, Joe Manganiello and Kareem Abdul-Jabbar. Leonard tells Penny, who tells Amy and Bernadette, all three women having a crush on Manganiello. Because of that indiscretion, Wil kicks out Leonard and admonishes the guys for using him for his connections, and says that one of the worst things about being a celebrity is not knowing whether someone will like him for himself. To apologize, the guys invite Wil to play D&D with them at Leonard’s apartment, but Wil, secretly in the middle of a game with Penny, Amy and Bernadette and the group, politely turns them down, before allowing the girls to send them a photo of the events as payback.


Title reference: Wil Wheaton's Dungeons & Dragons group.
27217"The Conference Valuation"Mark CendrowskiStory by : Chuck Lorre & Steven Molaro & Eric Kaplan
Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe
March 7, 2019 (2019-03-07)T12.1601712.99[25]

Penny and Bernadette attend a pharmaceuticals conference, where Bernadette's business rival Danny tries to recruit Penny. Bernadette is offended that Penny is considering the offer. At the meeting with Danny, Bernadette steps in to say Penny is the best saleswoman she knows and Penny agrees to keep working for Bernadette. Meanwhile, the rest of the gang does simple behavioral experiments on the Wolowitz children using a book Sheldon found. Leonard is shocked that his childhood was filled with these experiments; although his mother remembers that time with him fondly, she admits the experiment with him is not over. Raj figures Amy planted the book to get Sheldon to like babies, though Sheldon later states he would be open to having kids.


Title reference: Penny being valued as a saleswoman at the pharmaceutical conference.
27318"The Laureate Accumulation"Mark CendrowskiStory by : Steve Holland & Adam Faberman & David Saltzberg
Teleplay by : Dave Goetsch & Eric Kaplan & Maria Ferrari
April 4, 2019 (2019-04-04)T12.1601812.22[26]

Campbell and Pemberton start a publicity tour for their Nobel campaign, including appearing on The Ellen DeGeneres Show. Caltech reaches out to previous winners, including George Smoot, Kip Thorne and Frances H. Arnold, only to find that Sheldon has offended most of them in the past. Leonard and Penny convince them to show up to the reception, only for Pemberton and Campbell to crash the party. Leonard holds Sheldon back, only for Amy to verbally snap at them. Meanwhile, with Halley scared of the dark, Stuart and Bernadette turn Howard's story from his time in outer space into the children's book: The Frightened Little Astronaut. Howard is embarrassed until Bernadette talks him into helping children and Stuart's art career by letting it be published.


Title reference: Calling together several Nobel Laureate winners for Sheldon and Amy's event.
27419"The Inspiration Deprivation"Mark CendrowskiStory by : Eric Kaplan & Maria Ferrari & Andy Gordon
Teleplay by : Steve Holland & Anthony Del Broccolo & Tara Hernandez
April 18, 2019 (2019-04-18)T12.1601911.44[27]

Getting called into Human Resources for Amy's outburst, Mrs. Davis tells her and Sheldon they are blowing their chances at the Nobel Prize. Amy would be the fourth woman to win in Physics, pressuring her to be a role model for women everywhere. To calm down, they try a sensory deprivation tank, which Sheldon loves, but Amy's mood only worsens. Sheldon does not know how to help and ends up holding her while singing "Soft Kitty". A newly confident Amy goes back to Human Resources to be allowed to campaign again and shares a drink with Mrs. Davis. Meanwhile, Howard buys a scooter to ride with Raj like in the old days. Bernadette finds out and makes him sell it since it's too dangerous. Bert buys it and ends up meeting a nurse after he dislocates his arm in a wreck.


Title reference: Sheldon and Amy going into sensory deprivation tanks to calm down from the Nobel campaign.
27520"The Decision Reverberation"Mark CendrowskiStory by : Steven Molaro & Steve Holland & Tara Hernandez
Teleplay by : Eric Kaplan & Maria Ferrari & Jermey Howe
April 25, 2019 (2019-04-25)T12.1602011.84[28]

When Penny tells Leonard he needs to be more assertive in making decisions for himself, he starts standing up to Sheldon over small things. His confidence makes him want to demand the university support his idea for a plasma physics project. He threatens to quit if the university refuses, alarming both Sheldon and Penny, who consider this to be a risky career move. Sheldon is conflicted on whether or not he is being selfish over Leonard's decision, but Amy suggests that the fact that he is worried over Leonard's motivation proves that he does care about him, which he acknowledges. President Seibert refuses the project, but in order not to lose Leonard, gives him co-leadership over a photon entanglement project, leaving Leonard proud of himself and Penny impressed. Meanwhile, Raj shows Anu his lab, and suggests one possible answer for something he's seen in space might be alien life. When someone mentions this at his observatory presentation, the scientific community starts mocking him as a conspiracy theorist. Raj points out scientists should consider all possibilities when seeking the truth, though this causes people to think he believes in the Loch Ness Monster.


Title reference: Leonard deciding to be more assertive and threatening to quit if the university does not support his idea.
27621"The Plagiarism Schism"Nikki LorreStory by : Eric Kaplan & Maria Ferrari & Adam Faberman
Teleplay by : Steve Holland & Dave Goetsch & Tara Hernandez
May 2, 2019 (2019-05-02)T12.1602112.48[29]

Barry Kripke says that he can get proof that Pemberton plagiarized his thesis, which would destroy his chances at the Nobel Prize. Sheldon and Amy decide not to pursue this; they want to win on their own merits. Leonard decides to get the information from Kripke. Amy and Sheldon give it to Pemberton and Campbell, as they refuse to blackmail them. Campbell is furious that Pemberton's dishonesty could hurt his own career. It is revealed that Campbell is sleeping with Pemberton's ex-wife, causing the pair to brawl. Afterwards, Campbell exposes Pemberton, causing Pemberton to be fired. Amy and Sheldon reject a drunken Campbell's request to join their team. Bernadette tells Howard that another waitress at the Cheesecake Factory was attracted to him back in the day, so she said Howard had hepatitis to scare her off. Howard obsesses over who it was, until he tells Bernadette she is the only one that matters to him.


Title reference: Dr. Pemberton's plagiarism destroying his partnership with Dr. Campbell.
27722"The Maternal Conclusion"Kristy CecilStory by : Steve Holland & Eric Kaplan & Jeremy Howe
Teleplay by : Maria Ferrari & Andy Gordon & Anthony Del Broccolo
May 9, 2019 (2019-05-09)T12.1602212.59[30]

Leonard's mother Beverly visits, and he is thrilled when she takes an interest in his work. However, when he learns that she is doing research on him for a new parenting book, he is furious. He prepares to tell her how she let him down over the years, but instead chooses to accept and forgive her, and forgive himself for holding onto that resentment for so long. Beverley is touched that he forgave her and they share a genuine hug. Meanwhile, Anu gets a job offer in London. Raj prepares to fly out and propose to her, ready to follow her if she accepts. Howard stops Raj at the airport, saying there is a better match out there for him, convincing Raj to return home. Stuart and Denise are bothered by her creepy roommate Mitch, while Bernadette and Howard are tired of Denise constantly staying overnight with Stuart at their house. Stuart and Denise decide to move in together, and admit they love each other while convincing Mitch to move out.


Title reference: Leonard accepting his relationship with his mother for what it is.
27823"The Change Constant"Mark CendrowskiChuck Lorre & Steve Holland & Steven Molaro & Bill Prady & Dave Goetsch & Eric Kaplan & Maria Ferrari & Andy Gordon & Anthony Del Broccolo & Tara Hernandez & Jeremy Howe & Adam FabermanMay 16, 2019 (2019-05-16)T12.1602318.52[31]

The episode opens with a short montage of clips from the series' twelve seasons, then segues to Sheldon and Amy, who are up late waiting for a call from the Nobel Committee. Following a prank call from Kripke, they are told they've won the Nobel Prize in Physics for their super-asymmetry work. The sudden attention from the media and the university bothers Sheldon, while Amy is saddened by unflattering pictures of her in the news, so Raj convinces her to get a makeover. She loves her new look but a rattled Sheldon demands she change it back. Leonard calls him out for being rude, but Sheldon flees when he sees Penny emerge from the newly repaired elevator. Sheldon and Penny go to the Cheesecake Factory and Penny tells Sheldon that change is the only constant thing in life which Sheldon accepts finally accepting changes in his life. On a TV, they see Bernadette and Howard take credit as Sheldon and Amy's best friends. Raj and Leonard defend Amy, with Leonard accidentally breaking Sheldon's DNA molecule model in Apartment 4A. In the end, Penny convinces Sheldon to ride in the elevator.


Title reference: Penny pointing out to Sheldon that the only constant in life is change.
27924"The Stockholm Syndrome"Mark CendrowskiChuck Lorre & Steve Holland & Steven Molaro & Bill Prady & Dave Goetsch & Eric Kaplan & Maria Ferrari & Andy Gordon & Anthony Del Broccolo & Tara Hernandez & Jeremy Howe & Adam FabermanMay 16, 2019 (2019-05-16)T12.1602418.52[31]

Two months after the events of "The Change Constant", Sheldon and Leonard repair Sheldon's DNA molecule model as everyone prepares to fly to Sweden for the Nobel Prize award ceremony. Howard and Bernadette nervously leave their kids for the first time with Stuart and Denise, while Raj leaves his dog with Bert. Penny has become pregnant, though she and Leonard are keeping it a secret. On the flight, Raj meets Sarah Michelle Gellar. Penny's frequent bathroom trips make Sheldon fear she is sick. Penny reveals her pregnancy to Sheldon, but instead of being excited for her, Sheldon is only selfishly relieved that he will not get sick and he exposes the pregnancy, offending Leonard. At the hotel, a series of minor incidents with their kids make Howard and Bernadette want to go home. Much to their dismay, Sheldon is still insensitive. Amy furiously tells Sheldon he broke their friends' hearts and they only tolerate him because he does not intentionally do so, which she also sometimes does. Everyone decides to stay for the ceremony and Raj brings Gellar as a plus-one. After they are awarded their medals, Amy encourages girls to pursue science while Sheldon thanks his family and then individually acknowledges each of his friends and Amy as his other family who always support him, apologizing to all of them for his selfish behavior in the process. The episode's last scene is with the gang eating in Apartment 4A (an allusion to the final scene in the opening credits) as an acoustic version of the theme song's chorus plays then the scene fades to black ending the episode and the series.


Title reference: Sheldon thinking Penny is ill on the flight to Stockholm; a reference to the Stockholm syndrome.

RatingsEdit

No. Title Air date Rating/share
(18–49)
Viewers
(millions)
DVR
(18–49)
DVR viewers
(millions)
Total
(18–49)
Total viewers
(millions)
1 "The Conjugal Configuration" September 24, 2018 2.5/11 12.92[9] 1.7 5.29 4.2 18.22[32]
2 "The Wedding Gift Wormhole" September 27, 2018 2.2/10 12.04[10] 1.6 4.82 3.8 16.86[32]
3 "The Procreation Calculation" October 4, 2018 2.2/10 12.29[11] 1.6 4.85 3.8 17.14[33]
4 "The Tam Turbulence" October 11, 2018 2.3/10 12.94[12] 1.4 4.41 3.7 17.32[34]
5 "The Planetarium Collision" October 18, 2018 2.1/9 12.22[13] 1.5 4.56 3.6 16.78[35]
6 "The Imitation Perturbation" October 25, 2018 2.3/10 12.99[14] 1.4 4.56 3.6 17.56[36]
7 "The Grant Allocation Derivation" November 1, 2018 2.1/10 12.64[15] 1.5 4.43 3.7 17.08[37]
8 "The Consummation Deviation" November 8, 2018 2.3/10 12.85[16] 1.7 5.07 4.0 17.92[38]
9 "The Citation Negation" November 15, 2018 2.3/10 12.56[17] 1.5 4.78 3.9 17.35[39]
10 "The VCR Illumination" December 6, 2018 2.1/10 12.52[18] 1.6 4.76 3.7 17.29[40]
11 "The Paintball Scattering" January 3, 2019 2.2/10 12.80[19] 1.4 4.41 3.6 17.21[41]
12 "The Propagation Proposition" January 10, 2019 2.4/11 13.53[20] 1.5 4.48 3.9 18.01[42]
13 "The Confirmation Polarization" January 17, 2019 2.3/10 13.32[21] 1.5 4.45 3.8 17.78[43]
14 "The Meteorite Manifestation" January 31, 2019 2.4/11 13.66[22] 1.5 4.52 3.9 18.18[44]
15 "The Donation Oscillation" February 7, 2019 2.6/12 13.97[23] 1.4 4.69 4.0 18.66[45]
16 "The D & D Vortex" February 21, 2019 2.3/11 13.48[24] 1.5 4.75 3.8 18.23[46]
17 "The Conference Valuation" March 7, 2019 2.1/10 12.99[25] 1.5 4.62 3.6 17.61[47]
18 "The Laureate Accumulation" April 4, 2019 2.0/11 12.22[26] 1.4 4.45 3.4 16.67[48]
19 "The Inspiration Deprivation" April 18, 2019 1.9/11 11.44[27] 1.4 4.39 3.3 15.84[49]
20 "The Decision Reverberation" April 25, 2019 1.8/9 11.84[28] 1.4 4.60 3.2 16.45[50]
21 "The Plagiarism Schism" May 2, 2019 1.9/10 12.48[29] 1.4 4.42 3.3 16.91[51]
22 "The Maternal Conclusion" May 9, 2019 2.0/11 12.59[30] 1.5 4.91 3.5 17.50[52]
23 "The Change Constant" May 16, 2019 3.2/17 18.52[31] 1.8 6.22 5.0 24.75[53]
24 "The Stockholm Syndrome" May 16, 2019 3.2/17 18.52[31] 1.8 6.22 5.0 24.75[53]

ReferencesEdit

  1. ^ a b Goldberg, Lesley (August 22, 2018). "'Big Bang Theory' to End With Season 12". The Hollywood Reporter. Archived from the original on August 23, 2018. Retrieved September 24, 2018.
  2. ^ Andreeva, Nellie (July 9, 2018). "CBS Fall 2018 Premiere Dates: 'Big Bang' & 'Young Sheldon' To Help Launch 'Magnum PI' & 'Murphy Brown' Revival". Deadline Hollywood. Archived from the original on July 10, 2018. Retrieved September 24, 2018.
  3. ^ Goldberg, Lesley (March 20, 2017). "'Big Bang Theory' Officially Renewed for Two Seasons as Mayim Bialik, Melissa Rauch Await Deals". The Hollywood Reporter. Archived from the original on November 22, 2017. Retrieved September 24, 2018.
  4. ^ Hibberd, James (July 9, 2018). "The Big Bang Theory to end in 2019 with final season". Entertainment Weekly. Archived from the original on September 24, 2018. Retrieved September 24, 2018.
  5. ^ Andreeva, Nellie (August 23, 2018). ""The Big Bang Theory": Behind The Sudden Decision To End Series After 12 Seasons". Deadline Hollywood. Archived from the original on September 25, 2018. Retrieved September 24, 2018.
  6. ^ "The Big Bang Theory to Finish Its Run With a 2-Part Series Finale". Archived from the original on February 10, 2019. Retrieved February 10, 2019.
  7. ^ Ausiello, Michael (March 11, 2019). "Big Bang Series Finale to Air May 16 — Plus: 20 More CBS Finale Dates". TVLine. Archived from the original on March 28, 2019. Retrieved March 11, 2019.
  8. ^ Ausiello, Michael (April 29, 2019). "Big Bang Theory Retrospective to Air May 16 Following Series Finale". TV Line. Archived from the original on May 13, 2019. Retrieved May 19, 2019.
  9. ^ a b Welch, Alex (September 25, 2018). "'The Big Bang Theory' adjusts up, 'The Good Doctor' adjusts down: Monday final ratings". TV by the Numbers. Archived from the original on September 26, 2018. Retrieved September 25, 2018.
  10. ^ a b Welch, Alex (September 28, 2018). "'Grey's Anatomy,' 'Big Bang Theory,' and 'Thursday Night Football' adjust up: Thursday final ratings". TV by the Numbers. Archived from the original on September 29, 2018. Retrieved September 28, 2018.
  11. ^ a b Welch, Alex (October 5, 2018). "'Thursday Night Football' adjusts up: Thursday final ratings". TV by the Numbers. Archived from the original on October 6, 2018. Retrieved October 5, 2018.
  12. ^ a b Welch, Alex (October 12, 2018). "'Big Bang Theory' and 'Thursday Night Football' adjust up, 'I Feel Bad' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on October 13, 2018. Retrieved October 12, 2018.
  13. ^ a b Welch, Alex (October 19, 2018). "'Big Bang Theory,' 'Superstore,' and 'Thursday Night Football' adjust up: Thursday final ratings". TV by the Numbers. Archived from the original on October 20, 2018. Retrieved October 19, 2018.
  14. ^ a b Welch, Alex (October 26, 2018). "'Big Bang Theory,' 'Supernatural,' and 'Thursday Night Football' adjust up, 'Will & Grace' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on October 26, 2018. Retrieved October 26, 2018.
  15. ^ a b Welch, Alex (November 2, 2018). "'Grey's Anatomy,' 'Superstore,' and more adjust up, 'I Feel Bad' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on November 3, 2018. Retrieved November 2, 2018.
  16. ^ a b Welch, Alex (November 9, 2018). "'Thursday Night Football' adjusts up: Thursday final ratings". TV by the Numbers. Archived from the original on November 10, 2018. Retrieved November 9, 2018.
  17. ^ a b Welch, Alex (November 16, 2018). "'Thursday Night Football' adjusts up: Thursday final ratings". TV by the Numbers. Archived from the original on November 17, 2018. Retrieved November 16, 2018.
  18. ^ a b Welch, Alex (December 7, 2018). "'Thursday Night Football' adjusts up, 'Mom' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on December 8, 2018. Retrieved December 7, 2018.
  19. ^ a b Welch, Alex (January 7, 2019). "'The Blacklist,' 'The Orville,' 'Gotham,' everything else unchanged: Thursday final ratings". TV by the Numbers. Archived from the original on January 7, 2019. Retrieved January 7, 2019.
  20. ^ a b Welch, Alex (January 11, 2019). "'Mom' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on January 12, 2019. Retrieved January 11, 2019.
  21. ^ a b Rejent, Joseph (January 18, 2019). "'Mom' and 'Fam' adjust down: Thursday final ratings". TV by the Numbers. Archived from the original on January 19, 2019. Retrieved January 18, 2019.
  22. ^ a b Rejent, Joseph (February 1, 2019). "'Young Sheldon' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on February 2, 2019. Retrieved February 1, 2019.
  23. ^ a b Rejent, Joseph (February 8, 2019). "'The Big Bang Theory,' 'Grey's Anatomy,' 'Brooklyn Nine-Nine,' all others unchanged: Thursday final ratings". TV by the Numbers. Archived from the original on March 27, 2019. Retrieved February 8, 2019.
  24. ^ a b Welch, Alex (February 25, 2019). "'S.W.A.T.' and 'The Orville' adjust up, 'Young Sheldon' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on February 25, 2019. Retrieved February 25, 2019.
  25. ^ a b Rejent, Joseph (March 8, 2019). "'Station 19,' 'For the People' adjust down: Thursday final ratings". TV by the Numbers. Retrieved March 8, 2019.
  26. ^ a b Rejent, Joseph (April 5, 2019). "'The Big Bang Theory,' 'Young Sheldon' adjust up, 'For the People' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on April 5, 2019. Retrieved April 5, 2019.
  27. ^ a b Rejent, Joseph (April 19, 2019). "'Grey's Anatomy,' 'The Big Bang Theory' adjust up, 'Supernatural' adjusts down: Thursday final ratings". TV by the Numbers. Retrieved April 19, 2019.
  28. ^ a b Rejent, Joseph (April 26, 2019). "'The Big Bang Theory' adjusts up, NFL Draft adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on April 26, 2019. Retrieved April 26, 2019.
  29. ^ a b Rejent, Joseph (May 3, 2019). "'The Big Bang Theory,' 'Young Sheldon' adjust up: Thursday final ratings". TV by the Numbers. Archived from the original on May 3, 2019. Retrieved May 3, 2019.
  30. ^ a b Rejent, Joseph (May 10, 2019). "'Grey's Anatomy,' 'The Big Bang Theory' adjust up, 'In the Dark' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on May 10, 2019. Retrieved May 10, 2019.
  31. ^ a b c d Rejent, Joseph (May 17, 2019). "'Paradise Hotel,' 'The Big Bang Theory' finale adjust up, 'Young Sheldon' adjusts down: Thursday final ratings". TV by the Numbers. Archived from the original on May 17, 2019. Retrieved May 17, 2019.
  32. ^ a b Pucci, Douglas (October 10, 2018). "Live+7 Weekly Ratings: 'Manifest' is Most-Watched NBC Drama Series Premiere in 19 Years". Programming Insider. Archived from the original on October 10, 2018. Retrieved February 12, 2019.
  33. ^ Welch, Alex (October 18, 2018). "'A Million Little Things' and 'Manifest' score biggest viewer gains in broadcast Live +7 ratings for Oct. 1-7". TV by the Numbers. Archived from the original on October 18, 2018. Retrieved February 12, 2019.
  34. ^ Welch, Alex (October 29, 2018). "'Manifest' and 'The Good Doctor' score biggest viewer gains in broadcast Live +7 ratings for Oct. 8-14". TV by the Numbers. Archived from the original on April 2, 2019. Retrieved February 12, 2019.
  35. ^ Pucci, Douglas (October 30, 2018). "Live+7 Weekly Ratings: 'The Rookie' Debut on ABC Ranks in Top Ten for Raw Viewer Gains". Programming Insider. Archived from the original on November 26, 2018. Retrieved February 12, 2019.
  36. ^ Pucci, Douglas (November 6, 2018). "Live+7 Weekly Ratings: 'D.C.'s Legends of Tomorrow' Season Premiere Ranks Third in Adults 18-49 Percentage Gains". Programming Insider. Archived from the original on November 7, 2018. Retrieved February 12, 2019.
  37. ^ Pucci, Douglas (November 13, 2018). "Live+7 Weekly Ratings: ABC Drama 'A Million Little Things' Leads in Adults 18-49 Percentage Gains for the Second Time This Season". Programming Insider. Archived from the original on April 10, 2019. Retrieved February 12, 2019.
  38. ^ Pucci, Douglas (November 21, 2018). "Live+7 Weekly Ratings: 'Manifest' on NBC Leads All Gains for the Week". Programming Insider. Archived from the original on November 21, 2018. Retrieved February 12, 2019.
  39. ^ Pucci, Douglas (November 28, 2018). "Live+7 Weekly Ratings: 'The Rookie' on ABC Tops Viewer Percentage Gains for Broadcast Network Telecasts". Programming Insider. Archived from the original on November 29, 2018. Retrieved February 12, 2019.
  40. ^ Pucci, Douglas (December 18, 2018). "Live+7 Weekly Ratings: Fall Finales of 'The Big Bang Theory' and 'The Good Doctor' Lead All Telecasts in Overall Gains". Programming Insider. Archived from the original on February 7, 2019. Retrieved February 12, 2019.
  41. ^ Welch, Alex (January 16, 2019). "'The Masked Singer' and 'Big Bang Theory' score biggest 18-49 gains in broadcast Live +7 ratings for Dec. 31, 2018 – Jan. 6, 2019". TV by the Numbers. Archived from the original on January 17, 2019. Retrieved February 12, 2019.
  42. ^ Welch, Alex (January 28, 2019). "'Manifest' and 'Big Bang Theory' reign supreme in broadcast Live +7 ratings for Jan. 7-13, 2019". TV by the Numbers. Archived from the original on January 29, 2019. Retrieved February 12, 2019.
  43. ^ Welch, Alex (February 4, 2019). "'This is Us' and 'The Good Doctor' lead the broadcast Live +7 ratings for Jan. 14-20, 2019". TV by the Numbers. Archived from the original on February 7, 2019. Retrieved February 12, 2019.
  44. ^ Welch, Alex (February 21, 2019). "'The Big Bang Theory' and 'The Good Doctor' lead the broadcast Live +7 ratings for Jan. 28 – Feb. 3". TV by the Numbers. Archived from the original on February 22, 2019. Retrieved May 25, 2019.
  45. ^ Pucci, Douglas (February 20, 2019). "Live+7 Weekly Ratings: 'Manifest' Tops All Telecasts in Adults 18-49 Percentage Gains". Programming Insider. Archived from the original on February 25, 2019. Retrieved May 27, 2019.
  46. ^ Welch, Alex (March 7, 2019). "'This is Us' scores highest in the broadcast Live +7 ratings for Feb. 18-24, 2019". TV by the Numbers. Archived from the original on March 8, 2019. Retrieved May 25, 2019.
  47. ^ Welch, Alex (March 22, 2019). "'This is Us,' 'The Good Doctor' score biggest boosts in broadcast Live +7 ratings for March 4–10". TV by the Numbers. Archived from the original on April 2, 2019. Retrieved May 25, 2019.
  48. ^ Welch, Alex (April 23, 2019). "'This is Us' finale leads the broadcast Live +7 ratings for April 1–7". TV by the Numbers. Archived from the original on April 25, 2019. Retrieved May 25, 2019.
  49. ^ Thorne, Will (May 6, 2019). "Live+7 Ratings for Week of April 15: 'Good Girls,' 'New Amsterdam' Among Biggest Gainers". Variety. Archived from the original on May 9, 2019. Retrieved May 27, 2019.
  50. ^ Thorne, Will (May 13, 2019). "Live+7 Ratings for Week of April 22: Canceled 'Whiskey Cavalier' Among Biggest Gainers". Variety. Archived from the original on May 14, 2019. Retrieved May 27, 2019.
  51. ^ Pucci, Douglas (May 17, 2019). "Live+7 Weekly Ratings: 'The Big Bang Theory' Leads Broadcast Networks in Raw Gains Among Adults 18-49 for Third Consecutive Week". Programming Insider. Archived from the original on May 17, 2019. Retrieved May 27, 2019.
  52. ^ Pucci, Douglas (May 22, 2019). "Live+7 Weekly Ratings: 'Whiskey Cavalier' Leads in Percentage Gains with Viewers and Demos". Programming Insider. Archived from the original on May 24, 2019. Retrieved May 27, 2019.
  53. ^ a b Pucci, Douglas (May 29, 2019). "Live+7 Weekly Ratings: 'The Big Bang Theory' Series Finale Gains Most Total Viewers for Any Telecast in Six Months". Programming Insider. Retrieved May 29, 2019.

External linksEdit